IVF timing tweaked: could waiting 1-2 days boost baby chances?
NCT ID NCT04163133
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares the usual timing of the 'trigger' shot in IVF with a 1-2 day delay. Researchers want to see if waiting longer leads to more high-quality embryos and higher live birth rates. About 834 women undergoing their first or second IVF cycle will take part.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If delaying the trigger improves outcomes, it could help couples undergoing IVF get more high-quality embryos and higher live birth rates.
What could go wrong
This is an early-stage study comparing two timing strategies, not a new drug or treatment. The benefit of a delay is unproven, and individual results may vary.
Disclaimer
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Peking Univesity Third Hospital
RECRUITINGBeijing, Beijing Municipality, 100191, China
Contact Phone: •••-•••-•••• Email: •••••@•••••